package com.xm;

public class Test {
    public static void main(String[] args) {
        System.out.print("❤❤❤❤");
        System.out.print("❤❤❤");
        System.out.print("❤");
        System.out.println("哈哈");

        // int num = -1;
        // if (num < 0) {
        //     throw new IllegalArgumentException("Number must be positive");
        // }

    }
}
